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によって photography33 6555x4375 px
ストック写真ID: 104865670
Plumber giving plumbing lesson to man
Tradesman showing apprentice an inline dial
Plumbing apprentice and man
Teacher explaining machine and middle-aged
Plumbers and middle-aged male
Plumber with apprentice and plumber
Pointing at the gauge
Internal system and man
Female and male electrician measuring voltage in distribution board
Female worker learning to controls a machine
Plugging in wires and man
A portrait of plumbing apprentice observing procedure
In the factory and work
Male engineer repairing a gas boiler
Plumber showing trainee the pipework to a radiator
Portrait of team solving engine problem